DE102017009903A1 - Motor vehicle with a component of an internal combustion engine - Google Patents

Abstract

The invention relates to a motor vehicle with a component (12) of an internal combustion engine (16), wherein in the motor vehicle to the component (12) oriented protruding projection (38) is provided, by means of which the component (12) targeted at an accidental force application is smashed.

Description

The invention relates to a motor vehicle, with a component of an internal combustion engine.

The DE102014212050A1 discloses an arrangement for absorbing impact energy acting frontally on a motor vehicle.

In addition, the disclosed DE 10 2008 060 581 a vehicle, with a deformation region in which a component is arranged and in the event of a crash can be derived therefrom.

Object of the present invention is to develop a motor vehicle of the type mentioned in such a way that a particularly advantageous accident behavior can be realized.

This object is achieved by a motor vehicle having the features of patent claim 1. Advantageous embodiments with expedient developments of the invention are specified in the remaining claims.

In order to develop a vehicle of the type specified in claim 1 such that a particularly advantageous accident behavior can be realized, it is inventively provided that in an accidental shortening of the deformation region, the component is deliberately smashed.

The invention is based in particular on the following finding: In the development of modern motor vehicles, especially passenger cars, the shortest possible head length is desirable, in particular when using a front-transverse drive. For a designated as vehicle crash accident of the motor vehicle, especially in a frontal collision, this creates a certain degree of tension, since only a small deformation path is available to reduce kinetic energy or accident energy can. Particularly relevant for the degradation or absorption of a high amount of accident energy or kinetic energy is the running in particular in the vehicle longitudinal free distance between an end wall cross member and a drive train for driving the respective motor vehicle. It has been found that components, for example of the respective drive train, can usually lead to block formation or have a blocking effect, provided that they do not slip off the deformation region as in the prior art. Slippage of components from the deformation area can lead to secondary damage outside the deformation area. This disadvantage can now be avoided by means of the vehicle according to the invention.

In particular, it is to be understood by deliberately destroying a component that the component is shortened by disintegrating its outer structure, at least with regard to its expansion in one direction. The shortening of the component thus prevents the block formation and thus releases further deformation path - it makes it possible to further deform the deformation area.

Advantageously, by the fragmentation of the component, an energy absorbing element can convert an impact energy into deformation energy. By fragmentation of the component, a larger deformation path can be provided in an impact than in the prior art. In turn, this increased deformation path allows energy absorbing components, such as side members or crash boxes, to convert impact energy into deformation energy. From the fact that a component converts impact energy into deformation energy, it should be understood in particular that the component is deformed and / or dissolved in its structure.

Particularly preferably, the fragmentation is supported by the penetration of a hard penetrator. This penetrator may for example be designed in the form of a wedge, an edge, a mandrel or a reinforcement of an adjacent component. This may, in a particularly preferred embodiment, be located outside of the fragmentation of the component, for example on a structural component, such as a carrier of the vehicle. In the application, the penetrator can load the component approximately point or line-shaped and thus initiate the fragmentation of these by local overloading.

In one embodiment, the component is an element through which an exhaust gas flows, such as, for example, a catalytic converter or a housing of a drive machine. The element through which the exhaust gas flows can be embodied as an exhaust gas aftertreatment element. In this case, the exhaust gas aftertreatment element is preferably a catalyst. The exhaust aftertreatment element is, for example, a porous, ceramic structure which is accommodated in the receiving space and thus in the housing. The housing is or the shell elements are formed for example of a metallic material. If the catalytic converter or the housing and thus the exhaust aftertreatment element are reliably destroyed or smashed in a crash with a defined force, then so the catalyst can no longer block-forming interact with the end wall cross member and contributes to a positive accident behavior of the motor vehicle.

The opposite of the second shell element firmer and designed, for example, as a lower shell first shell element is used to secure a sufficient stability. The second shell element, which is softer than the first shell element and designed, for example, as an upper shell, serves to initiate targeted destruction of the catalyst, in particular in the direction of the end wall cross member, so that the catalyst is intentionally and selectively deformed in a force-induced and especially in the vehicle longitudinal force application, in particular without blocking Act.

The targeted destruction of the catalyst is initiated, for example, by at least one body arranged in at least one of the shell elements and / or by at least one penetrator arranged externally on the motor vehicle or on its body. Overall, a particularly advantageous accident behavior can be realized by means of the motor vehicle according to the invention, so that a particularly high level of safety for occupants of the motor vehicle can be represented.

Another background of the invention is that so-called accident structures of the motor vehicle are deformed in an accident in order to selectively reduce kinetic energy of the motor vehicle or accident energy, that is to absorb. Such an accident structure, which is also referred to as a crash structure or crash box, includes, for example, longitudinal members, which are stowed in particular in an extending in the vehicle longitudinal direction accidental application of force and thereby deformed. Such a deformation of accident structures and a concomitant absorption of kinetic energy or of accident energy occur, in particular, until block-forming components impair or prevent further shortening of the front end of the motor vehicle or make it impossible. As a result, there are increasing delays.

The idea of the invention is now to smash otherwise block-forming components such as the catalyst or the housing of an internal combustion engine in an accident, to allow further deformation and thus further energy absorption of the accident structures of the motor vehicle. The fragmentation or the disintegration of the aforementioned, otherwise block-forming component of the internal combustion engine additionally consumes energy and thus additionally relieves the accident structures. Examples of a component of the internal combustion engine in the context of the invention are potentially in an accident components to be crushed such as: crankcase, in particular cylinder crankcases, internal combustion engines, electric traction motors, components of the exhaust system such as turbochargers, mufflers, catalysts, particulate filters, ancillaries such as air compressors, generators, pumps , Gearbox, axle components or integral carrier.

In comparison to conventional motor vehicles, significantly lower delays in the event of an impact can be realized thereby, so that a particularly high level of safety can be achieved. Furthermore, the car can be carried out in a lighter weight and with smaller outer dimensions compared to conventional cars, whereby the car can be operated in total particularly efficient and thus low energy consumption. As a concrete embodiment example, it is provided, for example, in a motor vehicle with front transverse installed internal combustion engine, to smash the catalyst to absorb accident energy and free deformation path for the car or for accident structures.

In one embodiment of the invention, it is provided that at least one protruding projection oriented towards the component is provided on at least one first shell element, by means of which the component is intentionally to be shattered in the event of an accident-induced application of force. Thus, according to the invention, for example, a vehicle designed in particular as a motor vehicle is provided, in which case the component is shattered in the event of an accident-related shortening of a deformation zone, in particular in a stem of the vehicle. The fragmentation is supported for example by penetration of at least one hard penetrator. For example, before the accident, the penetrator is outside the component to be smashed. The component is in particular an exhaust aftertreatment element, such as a catalyst according to the invention.

In an advantageous embodiment of the invention, it is provided that in the installation position of the catalyst one of the shell elements is arranged in the vehicle longitudinal direction in front of the other shell element.

In a further advantageous embodiment of the invention, it is provided that at least one of the shell elements has at least one predetermined failure point at which the at least one shell element selectively fails in an accidental application of force.

Advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or in the figures alone can be used not only in the respectively specified combination but also in other combinations or in isolation, without the scope of To leave invention.

• 1 ausschnittsweise eine schematische Perspektivansicht einer Halteanordnung des Katalysators an einer Karosserie eines erfindungsgemäßen hier als Kraftwagen ausgeführten Fahrzeugs;
• 2 eine schematische und teilweise geschnittene Perspektivansicht des Katalysators gemäß einer ersten Ausführungsform;
• 3 ausschnittsweise eine weitere schematische Perspektivansicht der Halteanordnung;
• 4 eine schematische Querschnittsansicht des Katalysators gemäß einer zweiten Ausführungsform;
• 5 ausschnittsweise eine schematische Querschnittsansicht des Katalysators gemäß der zweiten Ausführungsform; und
• 6 eine schematische Querschnittsansicht des Katalysators gemäß einer dritten Ausführungsform.

The drawing shows in:

• 1 a schematic perspective view of a holding arrangement of the catalyst on a body of a vehicle according to the invention executed here as a motor vehicle;
• 2 a schematic and partially sectioned perspective view of the catalyst according to a first embodiment;
• 3 a detail of a further schematic perspective view of the holding arrangement;
• 4 a schematic cross-sectional view of the catalyst according to a second embodiment;
• 5 a partial cross-sectional view of the catalyst according to the second embodiment; and
• 6 a schematic cross-sectional view of the catalyst according to a third embodiment.

In the figures, the same or functionally identical elements are provided with the same reference numerals.

1 shows a detail of a schematic perspective view of a holding arrangement 10 one as a catalyst 12 and thus formed as an exhaust gas treatment device component on a self-supporting body 14 a vehicle designed as a passenger vehicle. The motor vehicle includes an internal combustion engine, also referred to as an internal combustion engine 16 , by means of which the motor vehicle is drivable. During their fired operation, the internal combustion engine stops 16 Exhaust gas prepared by the catalyst 12 can flow. By means of the catalyst 12 becomes the exhaust gas of the internal combustion engine 16 treated. Out 1 it can be seen that the internal combustion engine 16 and the catalyst 12 at the holding arrangement 10 in an engine room 18 are arranged, which is separated in the vehicle longitudinal direction to the rear of the interior of the motor vehicle by means of a partition wall. The partition is also referred to as an end wall and comprises in its lower part a cross member 20 , which is also referred to as end wall cross member. The body 14 is also referred to as shell construction. Also illustrated in 1 an arrow 22 the forward direction of the motor vehicle.

If, for example, an accident occurs in the motor vehicle, in which the motor vehicle collides head-on with an accident obstacle, so that the accident is a frontal collision of the motor vehicle, then an in-car crash occurs 1 through arrows 26 illustrated and acting in the vehicle longitudinal direction from front to rear accidental application of force. Due to the accidental application of force, for example, the internal combustion engine 16 and with this the catalyst 12 shifted in the vehicle longitudinal direction to the rear in the direction of the end wall and in particular of the end wall cross member. Thus, for example, the arrows illustrate 26 an accidental backward displacement of the internal combustion engine 16 in a strong impact. 2 shows the catalyst 12 according to a first embodiment. Out 2 it can be seen that the catalyst 12 a housing 24 through which at least one receiving space 28 is formed. In the recording room 28 is at least one exhaust gas aftertreatment element, also referred to as catalyst element 30 received, by means of which the exhaust gas is treated. In the first embodiment, at least two exhaust aftertreatment elements 30 in the recording room 28 arranged. The respective exhaust aftertreatment element 30 is, for example, a porous and ceramic structure, which is catalytically active, for example. By means of the catalyst 12 , in particular by means of the exhaust aftertreatment element 30 For example, carbon monoxide and unburned hydrocarbons as well as nitrogen monoxides can be converted to carbon dioxide, water and nitrogen. The housing 24 is formed, for example, of a metallic material.

In order to be able to realize a particularly advantageous accident behavior, such a special design of the catalyst 12 provided that the catalyst 12 is reliably destroyed with an accidental force application and especially in a frontal collision with a defined force. As a result, the catalyst acts 12 no longer forming a block together with the end wall cross member and can contribute overall positively to the accident behavior of the motor vehicle.

In the first embodiment, it is envisaged that to realize the particular design of the catalyst 12 at least one the recording room 28 partially delimiting and designed as a lower shell first shell element 32 and at least one the recording room 28 partially delimiting and designed as an upper shell second shell element 34 which is opposite to the first shell element 32 (Lower shell) has a lower strength or stability. In other words, the lower shell relative to the upper shell is stronger or more stable, so that the lower shell is used to ensure adequate stability. The upper shell, which is softer than the lower shell, is used to selectively destroy the catalyst 12 , in particular to the front wall, to be able to initiate.

In order to realize a targeted destruction, for example, on the shell element 34 at least one penetrator acting as a lead 36 is executed, provided by means of which the respective exhaust aftertreatment element 30 is to smash or is smashed in an accidental force application. Here is the respective lead 36 from the shell element 34 to the respective exhaust aftertreatment element 30 from and is formed, for example, as a wedge, which in case of accidental deformation of the housing 24 specifically in the respective exhaust aftertreatment element 30 penetrates and smashes it or destroys it. At the in 2 shown first embodiment is the respective projection 36 a component of the catalyst 12 and in the recording room 28 arranged and on the shell element 34 intended. Thus, the respective lead 36 with respect to the catalyst 12 component firmly.

3 shows the holding arrangement 10 in which, alternatively or in addition to the respective projection 36 on the self-supporting body 14 (Shell) at least one penetrator, which as a projection 38 is executed is held. The lead 38 stands from the body 14 towards the catalyst 12 and penetrates targeted at an accidental force application in the housing 24 and further into the respective exhaust gas aftertreatment element 30 to smash it or destroy it. In particular, the soft upper shell, for example, is the projection 38 facing or assigned. Thus, for example, in an accidental application of force, the soft upper shell initially in support system with the projection 38 , The lead 38 is expressed in the upper shell and in the sequence in the respective exhaust aftertreatment element 30 one and possibly through the upper shell, so that the catalyst 12 deliberately destroyed or smashed.

Overall, it can be seen that the catalyst 12 is a component or an aggregate, which is smashed to realize a sufficient energy reduction can. The previous and following comments on the catalyst 12 can be easily transferred to other units or components such as mufflers, turbochargers, crankcases, etc. The lead 38 is a relative to the catalyst 12 external penetrator for targeted destruction or smashing of the catalyst 12 , In contrast, for example, the respective projection 36 a component-rigid penetrator, which is designed for example as a mandrel, wedge or the like.

4 shows a second embodiment of the catalyst 12 in a deformed state. The shell element 32 forms, for example, a baffle 40 over which the catalyst 12 in support system with the cross member 20 (End wall support) comes. As a result, the soft upper shell is deformed, resulting in the example designed as a spreading edge projection 36 in the exhaust aftertreatment element 30 pushes. The exhaust aftertreatment element 30 is formed for example as a honeycomb body and of a wool, in particular a high-temperature wool 42 surrounded, which between the honeycomb body and the housing 24 is arranged. It is also in 4 one with 44 designated crankcase of the internal combustion engine 16 recognizable. About the crankcase 44 For example, the catalyst becomes 12 in the accident-related rearward displacement of the internal combustion engine described above 16 pressed against the end wall cross member and deformed in the sequence. The lead 36 acts as a wedge, which in the exhaust aftertreatment element 30 penetrates and deliberately destroys or smashes it. In other words, the crossbeam 20 hits the baffle 40 and transmits on this a force pulse on the spreading edge, which in turn the honeycomb body of the catalyst 12 smashed. The honeycomb body can reduce its volume due to a resulting disintegration of its internal structure.

5 shows the second embodiment undeformed in a detailed view. The upper shell becomes, for example, a first left and a second right shell half 45 respectively 46 formed, which in particular to form welds 48 be welded together. The respective shell half 45 respectively 46 in this case has a wall thickness, also referred to as wall thickness d of, for example, 0.5 millimeters. By appropriate shaping obtained the two shell halves 45 and 46 at their junction V a flanged edge and a doubling. The crimping edges in the welded state produce the aforementioned internal spreading edge, which for example has a thickness T which lies in a range of 2 mm to 2.5 mm inclusive. The spreading edge becomes in the accident by the baffle formed by the doubling 40 in the honeycomb body of the catalyst 12 driven and therefore allows its fragmentation.

Finally shows 6 a third embodiment of the catalyst 12 , In the third embodiment, the catalyst 12 , in particular the upper shell (shell element 34 ) at least one target failure point S on, which is also referred to as SollBruchstelle. In the event of accidental application of force, the upper shell fails at the desired failure point S targeted, so that trained for example as an external penetrator projection 38 at the target failure point S penetrate the upper shell and in the sequence in the exhaust aftertreatment element 30 , in particular in the honeycomb body, can penetrate. In other words, in an accidental application of force presses the projection 38 the upper shell, this breaks up and smashes the honeycomb body of the catalyst 12 ,

LIST OF REFERENCE NUMBERS

10

holding assembly

12

catalyst

14

body

16

Internal combustion engine

18

engine compartment

20

crossbeam

22

arrow

24

casing

26

arrow

28

accommodation space

30

exhaust aftertreatment element

32

first shell element

34

second shell element

36

head Start

38

head Start

40

baffle

42

High temperature wool

44

crankcase

45

shell half

46

shell half

48

Weld

d

wall thickness

S

Target failure point

t

thickness

V

junction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014212050 A1 [0002]
• DE 102008060581 [0003]

Claims (7)

A motor vehicle with a component (12) of an internal combustion engine (16), wherein in the motor vehicle to the component (12) oriented protruding projection (38) is provided, by means of which the component (12) is intentionally smashed in an accidental application of force. Car after Claim 1 , characterized in that the component comprises a housing (24) with at least one receiving space (28) partially delimiting first shell element (32). Car after Claim 2 , characterized in that the at least one first shell element (32, 34) has at least one predetermined failure point (S) at which the at least one first shell element (32, 34) selectively fails in an accidental application of force. Car after Claim 2 or 3 , characterized in that the housing (24) comprises a receiving chamber (28) partially delimiting the second shell element (34), which relative to the first shell element (32) has a lower strength. Motor vehicle according to one of the preceding claims, characterized in that the housing (24) forms a receiving space (28) of at least one exhaust gas aftertreatment element (30) of the exhaust gas flowing through the housing of the internal combustion engine (16). Motor vehicle according to one of the preceding claims, characterized in that in the installation position of the component (12) one of the shell elements (32, 34) in the vehicle longitudinal direction in front of the other shell element (34, 32) is arranged. Motor vehicle according to one of the preceding claims, characterized in that at least one of the shell elements (32, 34) at least one predetermined failure point (S), at which the at least one shell element (32, 34) selectively fails in an accidental application of force.

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